Question

help guys it's emergency please give me answer of this question​

Answer 1

part 1

Explanation:

Human blood is red in colour due to a pigment present in it called haemoglobin.

Answer 2

Explanation:

1. Human blood is red because of the protein hemoglobin, which contains a red-colored compound called heme that’s crucial for carrying oxygen through your bloodstream. Heme contains an iron atom which binds to oxygen; it’s this molecule that transports oxygen from your lungs to other parts of the body.

2. Blood donation is considered superior of all donations because it can save someome's life. Most of the lives are lost due to blood loss during surgeries, accidents or cases where regular blood transfusion is required. These lives can be saved, if adequate amount of blood is available.